Home / 8,778.48-12,102-5,979.12

Finding the Fourth Proportional to 8,778.48, 12,102 and 5,979.12

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Solution

The fourth proportional to 8,778.48, 12,102 and 5,979.12 is: 8,242.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.48 : 12,102 = 5,979.12 : x
  2. Step 2: Convert to fraction form
    8,778.48/12,102 = 5,979.12/x
  3. Step 3: Cross multiply
    8,778.48x = 12,102 × 5,979.12
  4. Step 4: Simplify right side
    8,778.48x = 72,359,310.24
  5. Step 5: Solve for x
    x = 72,359,310.24/8,778.48
  6. Step 6: Final answer
    x = 8,242.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.